Furnace-radiator.



N0. 790;699. I PATENT ED MAY 23, 1905. R. A.'MAY. I

FURNACE RADIATOR. APPLIGATION FILED JUNE-27,1904- 2 SHEETS-SHEET 1.

PATENTED MAY 28, 1905.

' .R. A. MAY. FURNACE RADIATOR.

APPLIOATION PILEDJ'UNE 27,1904.

2 SEBETS-SHEET Z.

Patented May 23, 1905.

PATENT OFFICE.

RUDOLPH A. MAY, OF AKRON, OHIO.

FURNACE-RADIATOR.

SPECIFICATION forming part of Letters Patent No. 790,699, dated May 23,1905.

Application filed June 2'7, 1904- Serial No. 214,852.

To all whom, it may concern:

Be it known that I, RUDOLPH A. MAY, a citizen of the United States,residing at Akron, in the county of Summit and State of Ohio, haveinvented a certain new and useful Improvement inFurnace-Radiators, ofwhich the following is a complete specification.

My invention has a general relation to airheating furnaces, and relatesespecially to the construction of the radiator or drum which is commonlyplaced upon the combustion-cham ber of the device.

Heretofore it has been customary in constructing furnaces to place anenlarged drum or radiator upon the fire-pot orcombustionchamber topermit an increased circulation and diflusion of the products ofcombustion Within the furnace previous to their departure by way of theuptake-flue. In constructing these radiators the usual practice has beento make the tops and bottoms of relatively heavy cast metal and connectthese by sides made from sheet metal. In doing this it has been foundadvantageous to construct flues or tubes through the radiator verticallyfor the passage of the air to be heated, so as to bring it closer to themost heated portions of the combustion-chamber and utilize as much aspossible all available surface of the radiator.

into the air-space, from whence. they are car-' ried to the apartmentsto be heated.

The objects of my invention are to provide aradiator for the purposedescribed of comparatively simple construction in which all partsexposed to the direct heat of the fire will be of relatively heavy castmetal whose enduring qualities will be equal to the balance of thefurnace and yet retain all desirable features as to the radiation ofheat, &c., of the old style of construction.

Another object is to form the portion of the lines or air-conduits notin direct contact with the fire of sheet metal both for lightness andcheapness and to make the sheet-metal portion constituting'one member ofeach conduit individually capable of removal and replacement withoutdisturbing any other portion of the radiator.

' A further object is to so construct the radiator as a whole that itwill at all times havea tendency to direct the upward flow of air aroundandthrough it and against its most heated portions and to prevent asmuch as possible the free passage of the air around the outside of theradiator and along the cold outer casing of the furnace and, on thecontrary, to cause it to flow toward the center of the furnace and keepit there until it enters the distribution-pipes. Y To the accomplishmentof the aforesaid objects my invention consists in the peculiar and novelconstruction, combination, and arrangement of the various partshereinafter described, referencebeing had to the accompanying drawings,forming a part hereof.

In the accompanying drawings, in which similar reference-numeralsindicate like parts on the different figures, Figure 1 is a plan view ofthe interior of an air-furnace looking down upon the radiator with theside casing broken to permit such view; and Fig. 2, a side elevation ofthe radiator of a furnace with its connections and a portion of thefire-pot, the outer casing being in section.

In the drawings, 1 is the outer casing of the furnace, here shown asmade up of a series of sheet metal cylinders held together by rings 2.This casing may be formed by brick walls, if so desired, or any otherappropriate material. \Vithin this casing 1 is the stove or combustiondevice 3, mounted, as usual, upon an ash-pit. (Not here shown, as itspresence in the drawings would not serve to aid in the explanation ofthis device.)

Upon the top of the combustion device 3 is placed the base 4; of theradiator, which consists,preferably,of an upwardly and outwardly flaringportion having around its outer edge an upturned flange 5. The outerconfiguration of this base 4 is curvilinear, with regularly occurringsemicircular indentations the convolutions of which are followed by theflange 5. -Upon' this is placed the dome 6 of the radiator, havingcurvilinear sides 7 arranged to exactly register with the indentationsin the base 4: and to nicely fit within the flange 5, by which it isaccurately held in position. The upperdiameter of this dome 6 ispreferably slightly narrower than the base 4, so as to give to thesemicircular indentations an inward inclination toward the center of thefurnace. The object of the inward inelination of the indentations 7toward the center is twofoldviz., to permit the ready Withdrawal of thepattern used in making this dome from the sand -in making the moldtherefor and to partially direct the flow of air to be heated toward thecenter of the device. It is generally preferable to make the top of thedome 6 crowning; but it is not absolutely necessary. Along the sides ofthe indentations 7 there are placed inwardly-projecting pins or lugs 8in substantial alinement with the main axis of each groove. In order toconvert these indentations 7 into air-conduits to heat air, a number ofsemicircular troughs or members 10 of sheet metal are made, provided atdeterminate intervals along their longitudinal edges with slots 9. Theseslots are generally L-sbaped, and their position in the trough edges isgoverned by the corresponding relative position of the pins or lugs 8 inthe indentations 7. These troughs are so bent as-to have a certainamount of outward spring or tendency to flatten themselves and are benttogether by hand when being placed in position and are forced forwardwith their edges in advance, so that the slots 9 will each straddletheir respective lug or pin 8 and slip thereover and upon a slightdownward blow will lock in place, so as to form with the in-- dentations7 a perfect air-conduit. Any other or preferred method of fasteningthese troughs or members may be employed without departing from myinvention. In making these troughs or members 10 it has been foundpreferable to make them of such length as to extend to or nearly to theouter casing of the furnace to catch and direct as much air as possibletoward the heated grooves 7. It has been. found that in order to rendertheinward directing of the air to be heated more satisfactory it maysometimes be expedient to seat a ring or apron 11 on the lower portionsof the troughs 10 or immediately therebelow which will reach to thecasing l and act as a further guide to the air.

One of the indentations 7 is used to receive the uptake-flue 12 from thecombustion-chamher, which may be provided with a diving-flue 13 and anextension 14, reaching to the center of the dome.

In constructing this radiator it is preferable to make the base 4 anddome 6 of relatively heavy cast metal, as they form the upper portion ofthe combustion-chamber and receive the direct heat from the fire,whilethe outer portions of the air-conduits in the radiator formed bythe troughs or members 10 may be of only sheet metal and whilesubstantially indestructible may readily be replaced one at a time withperfect case.

It will be readily apparent that the shape of the indentations 7 andtroughs or members 10 may be altered at will and the inclination of theindentations 7 be varied or eliminated, as desired, and any form ofsuitable fastening devices used for retaining the troughs in placewithout in any way departing from my invention.

What I claim is 1. A radiator for furnaces comprising a body portionwith a plurality of upwardlyextending indentations and a plurality ofindependent members detachabl y supported, each of said members adaptedto cooperate with one of said indentations and form therewith anair-conduit.

2.. A radiator for furnaces comprising a body portion with a pluralityof upwardlyextending indentations and a plurality of independent memberseach of which is suitably supported to cooperate with one of saidindentations and form therewith an air-conduit.

3. A radiator for furnaces comprising a body portion withupwardly-extending indentations, a plurality of independent members eachof which is adapted to cooperate with one indentation and form therewithan airconduit and means to suitably support said members.

4. A radiator for furnaces comprising a body portion with a plurality ofperipheral upwardly-extending indentations, slightly inclined toward thevertical center of said radiator, and a plurality of independent membersdetachably supported, each of said members adapted to cooperate with oneof said indentations and form therewith an air-conduit.

5. A radiator for furnaces comprising a body portion with a plurality ofupwardlyextending peripheral indentations,all of which are slightlyinclined toward a common center, a plurality of independent members eachof which is suitably supported to cooperate with one of saidindentations and form therewith an air-conduit.

6. A radiator for furnaces comprising a body portion with a plurality of'ieripheral indentations to form seats, a plurality of independentmembers and means to support each one of said members in one of saidseats to form therewith an upwardly-extendingairconduit.

In testimony that I claim the above I hereunto set my hand in thepresence of two witnesses.

RUDOLPH A. MAY. Witnesses:

DELLA KIMPFLIN, (J. E. HUMPHREY.

